[−][src]Trait fpn::cg::Polar

pub trait Polar<T> {
    fn polar(&self) -> Self;

    fn distance(&self) -> T;

    fn distance_square(&self) -> T;
}

Convert from cartesian cooridates to polar/sphere coordinates

For Vector2 return Vector2 x: distance, y: couterclock angle from X-axix For Vector3 return Vector3 x: distance, y: couterclock angle from X-axis, z: angle from positive Y-axis

If T is one of the primitives, then T will be cast to f64 and use native sqrt, atan2 to compute.

If T is FPN, then T will be converted to F64 using trait To. The computation is using binary search against a prepared angle array(from 0 to 0.25pi), with time complexity O(log(K)) where K mean the array length which is fixed as 65 currently. The result difference for radius distance is about radius * 0.25pi/65 which is about 0.012 * radius, for angle the difference is about 0.012 plus the eps() of the specific FPN

Required methods

fn polar(&self) -> Self

fn distance(&self) -> T

fn distance_square(&self) -> T

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Implementors

impl Polar<f32> for Vector2<f32>[src]

impl Polar<f32> for Vector3<f32>[src]

impl Polar<f64> for Vector2<f64>[src]

impl Polar<f64> for Vector3<f64>[src]

impl Polar<i16> for Vector2<i16>[src]

impl Polar<i16> for Vector3<i16>[src]

impl Polar<i32> for Vector2<i32>[src]

impl Polar<i32> for Vector3<i32>[src]

impl Polar<i64> for Vector2<i64>[src]

impl Polar<i64> for Vector3<i64>[src]

impl Polar<i8> for Vector2<i8>[src]

impl Polar<i8> for Vector3<i8>[src]

impl<F> Polar<FPN<i16, F>> for FVector2<i16, F> where
    F: Unsigned, [src]

impl<F> Polar<FPN<i16, F>> for FVector3<i16, F> where
    F: Unsigned, [src]

impl<F> Polar<FPN<i32, F>> for FVector2<i32, F> where
    F: Unsigned, [src]

impl<F> Polar<FPN<i32, F>> for FVector3<i32, F> where
    F: Unsigned, [src]

impl<F> Polar<FPN<i64, F>> for FVector2<i64, F> where
    F: Unsigned, [src]

impl<F> Polar<FPN<i64, F>> for FVector3<i64, F> where
    F: Unsigned, [src]

impl<F> Polar<FPN<i8, F>> for FVector2<i8, F> where
    F: Unsigned, [src]

impl<F> Polar<FPN<i8, F>> for FVector3<i8, F> where
    F: Unsigned, [src]

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